Wiring test key steps what are key steps in wiring decomposition

we all know that after the completion of a wiring involves wiring test this link, but often overlooked several wiring test key steps.

on-off testing is the foundation of

on-off testing is the basis of the test, is one of the most basic of line construction detection. Although only the test of the cable on and off and the cable line method is correct, but this step. Can use pro tester for testing. Usually this is for wiring construction workers general cable detection tools to use.

certification test key

when cable wiring construction has been completed, need to all cable system certification test. Now according to international standards, such as TSB67, ISO11801, etc. , to fully test of cable system, to ensure that the installed cable system meets the design standards, such as super 5, 6, 6 class standards, etc. This process need to test a variety of electrical parameters, and finally to give each link that each cable test report. Test report including the test of time, place and operator's name, use standard, the test results. Many test parameters, such as: WareMap diagram, length, attenuation, near end crosstalk crosstalk and attenuation ratio, return loss and transmission delay, delay deviation, comprehensive near end crosstalk and far end crosstalk, parameters such as equivalent far-end crosstalk.

random test cannot little

construction completed, need to be done by the third party on the integrated wiring system of parking, such as quality inspection department. Parking is indispensable, and the corresponding parking fee, there may be differences between regions, but receive 50 yuan is basically an information point to detect cost. The proportion of integrated wiring system of parking is usually 10% to 20%.

in the process of test, the possible problems mainly has the following situation.

the wiring diagram is not through the reasons may be: at the ends of the joint are open circuit, short circuit, cross, burst open circuit; Jumper error ( Some networks require the sender and the receiver jumper, when constructing test for these network link, due to the equipment line jumper, test wiring diagram and cross will appear 。

the length of the failed reasons may be: cable actually spend long long; Cable open circuit or short circuit; Equipment wired and chief through long jumper.

near end crosstalk failed reasons may be: proximal points is not strong; The remote connection point short circuit; External noise; Link to the quality of the cable and connectors, electrical properties, have questions or is not the same kind of product; There is something wrong with the device the construction technology level, the lineup is not standard; Impedance mismatch.

attenuation failed reasons may be: the length of the super-long; Ambient temperature too high; Improper termination; Link to the quality of the cable and connectors, electrical properties, have questions or is not the same kind of product; There is something wrong with the device the construction technology level, the lineup is not standard; Impedance mismatch.

the above is the small make up to bring us the wiring test what are the key steps in the entire contents of the, you when doing the test wiring must not forget the key steps in, hoping to bring help to you.

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